Dec 9, 2001

The heat's on nature in Japan

Think of Japan 100 years from now. The average global temperature has risen by up to 6 degrees, and here is no exception. Just as the cherry blossom wave passes up the country each spring, the frontier of many species, both plant and animal, ...

Nature allows for few winners in the face of fire

| Dec 6, 2001

Nature allows for few winners in the face of fire

Fire! It’s a word that strikes terror. Images of leaping, roaring, scorching flames spring to mind; images of billowing smoke and suffocating fumes; of people and other creatures great and small fleeing for their lives. Within seconds, the awful, fearful unreality of a major ...

Alien killers revel in 'cute pet' role

| Nov 22, 2001

Alien killers revel in 'cute pet' role

As a family, cats have successfully colonized the Americas, Europe, Africa and Asia, with only Australia among the larger landmasses lacking native species. They range in size from the immense Siberian tiger to the diminutive black-footed cat of southern Africa, and take an equally ...

| Oct 25, 2001

Serendipity in Hokkaido's autumnal air

It was just a bridge, not even a special bridge. The Heiwa Bridge spans the eastern end of Lake Tofutsu in northeastern Hokkaido. To the north there is a narrow neck of wooded land and then the Okhotsk Sea. To the south lies more ...

| Oct 18, 2001

Rare hybrids on evolution's way to where?

Humans like rules as a way of ordering the world into familiar and comfortable patterns. For naturalists, one of the basic rules is the concept of biological species, which forms the basis of modern biodiversity and conservation studies. An iguana unlike any other, being ...

| Oct 4, 2001

Marveling at mammalian masters of flight

I have dreamed of flying since childhood, and perhaps that is why I am obsessed with flying creatures. As ground-hugging humans, we readily identify with our fellow terrestrial mammals, assuming, easily enough, that being earthbound is a natural state for life on earth. But, ...

Sep 30, 2001

Alien invaders

They arrive in bunches of bananas; they turn up in containers of vegetables; they sneak in hidden inside rattan and wooden furniture; they disembark from among shipped household possessions, industrial and military equipment. They are as pervasive as the computer server virus Nimda, but, ...

| Sep 20, 2001

Giant umbellifer stalks northern Japan

Towering above the surrounding lush summer herb growth stands the hollow-stemmed monster known locally as Ezo nyuu and to botanists as Angelica ursina. These pearl-headed plants appear at the height of summer, a potent reminder that the longest days are past and that, despite ...

| Sep 6, 2001

Quitting the wandering life to settle down

Where waves crash across rocky shores there is a narrow region between the uppermost level covered at high tide and the lowest level exposed at low tide, the intertidal zone, that is prolific of life. Living there are seaweeds, shellfish, fish that prefer shallow ...

| Aug 16, 2001

Slow and steady wins the dispersal race

Humans have an anthropocentric tendency to look down on “cold-blooded” reptiles. We even use the term “cold-blooded” in a derogatory way to criticize people who seem somehow less than human. A marine iguana soaks up solar energy on a rock in the Galapagos Islands. ...

| Aug 2, 2001

Salt tolerance and life's dispersal derby

Salt is an interesting mineral. We all need it. It is crucial to the operation of the cells that make up our bodies. The Komodo dragon’s hide resists salt. Too much is bad for us, though, and a salt-rich environment is very hard for ...